D4: udi is unknown.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).A product sample was received for evaluation.Visual and functional testing were performed.Visually inspected all batteries, plugged each battery in a test pump and charged for a few minutes, checked battery diagnostics.Detected no smoke or any damage.Only 1 out of 6 batteries had "battery not working" alarm occur with all battery values zero.The root cause of the reported issue could not be confirmed as the reported issue could not be replicated at the time of the device evaluation.Actions were taken to mitigate the reported issue: all 6 batteries were scrapped.
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